People with slow swings should buy lighter racquets to have more power?
I have a pretty slow swing it seems and i had trouble hitting deep shots with my older racquet.

If you hit a nail with a small hammer you have to hit it hard , and if you wanna hit it with a sledgehammer you don't need too much power.
Is that logical?
I have a lighter raquet now compared to my older one and even doe I'm much stronger now as i used to be ( and I know that technique is way more important) , the ball coming from the racquet doesn't seem to have the same speed as before.
I hope I'm making sence , I'm struggling with my English.And if I am mistaking hopefuly someone will correct me.

People with slow swings should buy lighter racquets to have more power?
I have a pretty slow swing it seems and i had trouble hitting deep shots with my older racquet.

Yeah. Lighter frames generate more power, or, in a point of view of Physics, they absorb less the energy of the impact. That makes the ball "rebound" from the racket faster, but the lighter frame, as it's unable to absorb the energy, makes your arm take the impact, generating injuries.

The fact is that "lighter" frames have the weight dislocated to the racket head, and that's what generates more power. Balanced and "head light" (weight in the handle) rackets feel more natural and protect your arm. I wouldn't recommend using a very light racket. Unless you hardly play.

If you hit a nail with a small hammer you have to hit it hard , and if you wanna hit it with a sledgehammer you don't need too much power.
Is that logical?
I have a lighter raquet now compared to my older one and even doe I'm much stronger now as i used to be ( and I know that technique is way more important) , the ball coming from the racquet doesn't seem to have the same speed as before.
I hope I'm making sence , I'm struggling with my English.And if I am mistaking hopefuly someone will correct me.